Add buildah-manifest-create and buildah-manifest-push Tasks

[dorzel]

Changes

Adds two new buildah Tasks related to creating and pushing manifest lists (image indexes).

This is mainly to enable simpler multiarch builds on clusters with nodes of mixed architecture, and to work well with tektoncd/pipeline#8599 in a PipelineRun.

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
review them:

• Follows the authoring recommendations
• Includes docs (if user facing)
• Includes tests (for new tasks or changed functionality)
  • See the end-to-end testing documentation for guidance and CI details.
• Meets the Tekton contributor standards (including functionality, content, code)
• Commit messages follow commit message best practices
• Has a kind label. You can add one by adding a comment on this PR that
  contains /kind <type>. Valid types are bug, cleanup, design, documentation,
  feature, flake, misc, question, tep
• Complies with Catalog Organization TEP, see example. Note An issue has been filed to automate this validation

  • File path follows <kind>/<name>/<version>/name.yaml

  • Has README.md at <kind>/<name>/<version>/README.md

  • Has mandatory metadata.labels - app.kubernetes.io/version the same as the <version> of the resource

  • Has mandatory metadata.annotations tekton.dev/pipelines.minVersion

  • mandatory spec.description follows the convention

      ```
    
      spec:
        description: >-
          one line summary of the resource
    
          Paragraph(s) to describe the resource.
      ```
    

See the contribution guide for more details.

[dorzel]

/kind feature

[afrittoli]

/retest

[afrittoli]

@tektoncd/catalog-maintainers

[afrittoli]

/retest

[afrittoli]

/retest

[afrittoli]

/test pull-catalog-catlin-lint

[tekton-robot]

@afrittoli: No presubmit jobs available for tektoncd/catalog@main

Details

In response to this:

/test pull-catalog-catlin-lint

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[afrittoli]

/test pull-catalog-catlin-lint

[afrittoli]

@dorzel I'm working on fixing the catlin CI job in the new CI environment. Please bear with me until that's done.

[afrittoli]

/test pull-catalog-catlin-lint

[vdemeester]

/lgtm

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: vdemeester

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [vdemeester]

Approvers can indicate their approval by writing /approve in a comment
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[afrittoli]

/verify-owners

[dibyom]

/verify-owners

[vdemeester]

/verify-owners

[vdemeester]

@dorzel did you accept the invitation ?

[vdemeester]

Ah wait 16 hours ago, it didn't sync yet, running the sync manually to speed the process.

[vdemeester]

/verify-owners

[dorzel]

/verify-owners

[dorzel]

@vdemeester Got the invitation and accepted, looks good now!